Answer:
The 3rd one is correct
Explanation:
Protons and neutrons have approximately the same mass, about 1.67 × 10−24 grams, which scientists define as one atomic mass unit (amu) or one Dalton. Each electron has a negative charge (−1) equal to the positive charge of a proton (+1). Neutrons are uncharged particles found within the nucleus.
The answer is C.
H₂O₂ ----> H₂O + O₂
The Answer is C
<span> It can be separated by physical means and is uniform in composition.</span>
